/****************************************************************************
- * Copyright (c) 1998 Free Software Foundation, Inc. *
+ * Copyright (c) 1998-2011,2012 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
/****************************************************************************
* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
* and: Eric S. Raymond <esr@snark.thyrsus.com> *
+ * and: Thomas E. Dickey 1996 on *
****************************************************************************/
/*
#include <ctype.h>
#include <tic.h>
-MODULE_ID("$Id: comp_scan.c,v 1.34 1998/11/01 00:56:39 tom Exp $")
+MODULE_ID("$Id: comp_scan.c,v 1.101 2012/12/08 22:19:25 tom Exp $")
/*
* Maximum length of string capability we'll accept before raising an error.
#define iswhite(ch) (ch == ' ' || ch == '\t')
-int _nc_syntax; /* termcap or terminfo? */
-long _nc_curr_file_pos; /* file offset of current line */
-long _nc_comment_start; /* start of comment range before name */
-long _nc_comment_end; /* end of comment range before name */
-long _nc_start_line; /* start line of current entry */
+NCURSES_EXPORT_VAR (int) _nc_syntax = 0; /* termcap or terminfo? */
+NCURSES_EXPORT_VAR (int) _nc_strict_bsd = 1; /* ncurses extended termcap? */
+NCURSES_EXPORT_VAR (long) _nc_curr_file_pos = 0; /* file offset of current line */
+NCURSES_EXPORT_VAR (long) _nc_comment_start = 0; /* start of comment range before name */
+NCURSES_EXPORT_VAR (long) _nc_comment_end = 0; /* end of comment range before name */
+NCURSES_EXPORT_VAR (long) _nc_start_line = 0; /* start line of current entry */
+
+NCURSES_EXPORT_VAR (struct token) _nc_curr_token =
+{
+ 0, 0, 0
+};
/*****************************************************************************
*
*****************************************************************************/
static bool first_column; /* See 'next_char()' below */
+static bool had_newline;
static char separator; /* capability separator */
static int pushtype; /* type of pushback token */
-static char pushname[MAX_NAME_SIZE+1];
+static char *pushname;
+
+#if NCURSES_EXT_FUNCS
+NCURSES_EXPORT_VAR (bool) _nc_disable_period = FALSE; /* used by tic -a option */
+#endif
+
+/*****************************************************************************
+ *
+ * Character-stream handling
+ *
+ *****************************************************************************/
+
+#define LEXBUFSIZ 1024
+
+static char *bufptr; /* otherwise, the input buffer pointer */
+static char *bufstart; /* start of buffer so we can compute offsets */
+static FILE *yyin; /* scanner's input file descriptor */
+
+/*
+ * _nc_reset_input()
+ *
+ * Resets the input-reading routines. Used on initialization,
+ * or after a seek has been done. Exactly one argument must be
+ * non-null.
+ */
+
+NCURSES_EXPORT(void)
+_nc_reset_input(FILE *fp, char *buf)
+{
+ pushtype = NO_PUSHBACK;
+ if (pushname != 0)
+ pushname[0] = '\0';
+ yyin = fp;
+ bufstart = bufptr = buf;
+ _nc_curr_file_pos = 0L;
+ if (fp != 0)
+ _nc_curr_line = 0;
+ _nc_curr_col = 0;
+}
+
+/*
+ * int last_char()
+ *
+ * Returns the final nonblank character on the current input buffer
+ */
+static int
+last_char(int from_end)
+{
+ size_t len = strlen(bufptr);
+ int result = 0;
+
+ while (len--) {
+ if (!isspace(UChar(bufptr[len]))) {
+ if (from_end < (int) len)
+ result = bufptr[(int) len - from_end];
+ break;
+ }
+ }
+ return result;
+}
+
+/*
+ * int next_char()
+ *
+ * Returns the next character in the input stream. Comments and leading
+ * white space are stripped.
+ *
+ * The global state variable 'firstcolumn' is set TRUE if the character
+ * returned is from the first column of the input line.
+ *
+ * The global variable _nc_curr_line is incremented for each new line.
+ * The global variable _nc_curr_file_pos is set to the file offset of the
+ * beginning of each line.
+ */
+
+static int
+next_char(void)
+{
+ static char *result;
+ static size_t allocated;
+ int the_char;
+
+ if (!yyin) {
+ if (result != 0) {
+ FreeAndNull(result);
+ FreeAndNull(pushname);
+ allocated = 0;
+ }
+ /*
+ * An string with an embedded null will truncate the input. This is
+ * intentional (we don't read binary files here).
+ */
+ if (bufptr == 0 || *bufptr == '\0')
+ return (EOF);
+ if (*bufptr == '\n') {
+ _nc_curr_line++;
+ _nc_curr_col = 0;
+ } else if (*bufptr == '\t') {
+ _nc_curr_col = (_nc_curr_col | 7);
+ }
+ } else if (!bufptr || !*bufptr) {
+ /*
+ * In theory this could be recoded to do its I/O one character at a
+ * time, saving the buffer space. In practice, this turns out to be
+ * quite hard to get completely right. Try it and see. If you
+ * succeed, don't forget to hack push_back() correspondingly.
+ */
+ size_t used;
+ size_t len;
-static int last_char(void);
-static int next_char(void);
-static long stream_pos(void);
-static bool end_of_stream(void);
-static void push_back(char c);
+ do {
+ bufstart = 0;
+ used = 0;
+ do {
+ if (used + (LEXBUFSIZ / 4) >= allocated) {
+ allocated += (allocated + LEXBUFSIZ);
+ result = typeRealloc(char, allocated, result);
+ if (result == 0)
+ return (EOF);
+ if (bufstart)
+ bufstart = result;
+ }
+ if (used == 0)
+ _nc_curr_file_pos = ftell(yyin);
+
+ if (fgets(result + used, (int) (allocated - used), yyin) != 0) {
+ bufstart = result;
+ if (used == 0) {
+ if (_nc_curr_line == 0
+ && IS_TIC_MAGIC(result)) {
+ _nc_err_abort("This is a compiled terminal description, not a source");
+ }
+ _nc_curr_line++;
+ _nc_curr_col = 0;
+ }
+ } else {
+ if (used != 0)
+ _nc_STRCAT(result, "\n", allocated);
+ }
+ if ((bufptr = bufstart) != 0) {
+ used = strlen(bufptr);
+ while (iswhite(*bufptr)) {
+ if (*bufptr == '\t') {
+ _nc_curr_col = (_nc_curr_col | 7) + 1;
+ } else {
+ _nc_curr_col++;
+ }
+ bufptr++;
+ }
+
+ /*
+ * Treat a trailing <cr><lf> the same as a <newline> so we
+ * can read files on OS/2, etc.
+ */
+ if ((len = strlen(bufptr)) > 1) {
+ if (bufptr[len - 1] == '\n'
+ && bufptr[len - 2] == '\r') {
+ len--;
+ bufptr[len - 1] = '\n';
+ bufptr[len] = '\0';
+ }
+ }
+ } else {
+ return (EOF);
+ }
+ } while (bufptr[len - 1] != '\n'); /* complete a line */
+ } while (result[0] == '#'); /* ignore comments */
+ } else if (*bufptr == '\t') {
+ _nc_curr_col = (_nc_curr_col | 7);
+ }
+
+ first_column = (bufptr == bufstart);
+ if (first_column)
+ had_newline = FALSE;
+
+ _nc_curr_col++;
+ the_char = *bufptr++;
+ return UChar(the_char);
+}
+
+static void
+push_back(int c)
+/* push a character back onto the input stream */
+{
+ if (bufptr == bufstart)
+ _nc_syserr_abort("Can't backspace off beginning of line");
+ *--bufptr = (char) c;
+ _nc_curr_col--;
+}
+
+static long
+stream_pos(void)
+/* return our current character position in the input stream */
+{
+ return (yyin ? ftell(yyin) : (bufptr ? bufptr - bufstart : 0));
+}
+
+static bool
+end_of_stream(void)
+/* are we at end of input? */
+{
+ return ((yyin ? feof(yyin) : (bufptr && *bufptr == '\0'))
+ ? TRUE : FALSE);
+}
/* Assume we may be looking at a termcap-style continuation */
-static inline int eat_escaped_newline(int ch)
+static NCURSES_INLINE int
+eat_escaped_newline(int ch)
{
- if (ch == '\\')
- while ((ch = next_char()) == '\n' || iswhite(ch))
- continue;
- return ch;
+ if (ch == '\\')
+ while ((ch = next_char()) == '\n' || iswhite(ch))
+ continue;
+ return ch;
}
+#define TOK_BUF_SIZE MAX_ENTRY_SIZE
+
+#define OkToAdd() \
+ ((tok_ptr - tok_buf) < (TOK_BUF_SIZE - 2))
+
+#define AddCh(ch) \
+ *tok_ptr++ = (char) ch; \
+ *tok_ptr = '\0'
+
+static char *tok_buf;
+
/*
* int
* get_token()
*
*/
-int _nc_get_token(void)
+NCURSES_EXPORT(int)
+_nc_get_token(bool silent)
{
-static const char terminfo_punct[] = "@%&*!#";
-long number;
-int type;
-int ch;
-char * numchk;
-char numbuf[80];
-unsigned found;
-static char buffer[MAX_ENTRY_SIZE];
-char *ptr;
-int dot_flag = FALSE;
-long token_start;
-
- if (pushtype != NO_PUSHBACK)
- {
- int retval = pushtype;
-
- _nc_set_type(pushname);
- DEBUG(3, ("pushed-back token: `%s', class %d",
- _nc_curr_token.tk_name, pushtype));
-
- pushtype = NO_PUSHBACK;
- pushname[0] = '\0';
+ static const char terminfo_punct[] = "@%&*!#";
+
+ char *after_name; /* after primary name */
+ char *after_list; /* after primary and alias list */
+ char *numchk;
+ char *tok_ptr;
+ char *s;
+ char numbuf[80];
+ int ch, c0, c1;
+ int dot_flag = FALSE;
+ int type;
+ long number;
+ long token_start;
+ unsigned found;
+#ifdef TRACE
+ int old_line;
+ int old_col;
+#endif
- /* currtok wasn't altered by _nc_push_token() */
- return(retval);
- }
+ if (pushtype != NO_PUSHBACK) {
+ int retval = pushtype;
- if (end_of_stream())
- return(EOF);
+ _nc_set_type(pushname != 0 ? pushname : "");
+ DEBUG(3, ("pushed-back token: `%s', class %d",
+ _nc_curr_token.tk_name, pushtype));
-start_token:
- token_start = stream_pos();
- while ((ch = next_char()) == '\n' || iswhite(ch))
- continue;
+ pushtype = NO_PUSHBACK;
+ if (pushname != 0)
+ pushname[0] = '\0';
- ch = eat_escaped_newline(ch);
+ /* currtok wasn't altered by _nc_push_token() */
+ return (retval);
+ }
- if (ch == EOF)
- type = EOF;
- else {
- /* if this is a termcap entry, skip a leading separator */
- if (separator == ':' && ch == ':')
- ch = next_char();
+ if (end_of_stream()) {
+ yyin = 0;
+ (void) next_char(); /* frees its allocated memory */
+ if (tok_buf != 0) {
+ if (_nc_curr_token.tk_name == tok_buf)
+ _nc_curr_token.tk_name = 0;
+ }
+ return (EOF);
+ }
- if (ch == '.') {
- dot_flag = TRUE;
- DEBUG(8, ("dot-flag set"));
+ start_token:
+ token_start = stream_pos();
+ while ((ch = next_char()) == '\n' || iswhite(ch)) {
+ if (ch == '\n')
+ had_newline = TRUE;
+ continue;
+ }
- while ((ch = next_char())=='.' || iswhite(ch))
- continue;
- }
+ ch = eat_escaped_newline(ch);
+ _nc_curr_token.tk_valstring = 0;
- if (ch == EOF) {
- type = EOF;
- goto end_of_token;
- }
+#ifdef TRACE
+ old_line = _nc_curr_line;
+ old_col = _nc_curr_col;
+#endif
+ if (ch == EOF)
+ type = EOF;
+ else {
+ /* if this is a termcap entry, skip a leading separator */
+ if (separator == ':' && ch == ':')
+ ch = next_char();
+
+ if (ch == '.'
+#if NCURSES_EXT_FUNCS
+ && !_nc_disable_period
+#endif
+ ) {
+ dot_flag = TRUE;
+ DEBUG(8, ("dot-flag set"));
- /* have to make some punctuation chars legal for terminfo */
- if (!isalnum(ch) && !strchr(terminfo_punct, (char)ch)) {
- _nc_warning("Illegal character (expected alphanumeric or %s) - %s",
- terminfo_punct, _tracechar((chtype)ch));
- _nc_panic_mode(separator);
- goto start_token;
- }
+ while ((ch = next_char()) == '.' || iswhite(ch))
+ continue;
+ }
- ptr = buffer;
- *(ptr++) = ch;
-
- if (first_column) {
- char *desc;
-
- _nc_comment_start = token_start;
- _nc_comment_end = _nc_curr_file_pos;
- _nc_start_line = _nc_curr_line;
-
- _nc_syntax = ERR;
- while ((ch = next_char()) != '\n')
- {
- if (ch == EOF)
- _nc_err_abort("premature EOF");
- else if (ch == ':' && last_char() != ',')
- {
- _nc_syntax = SYN_TERMCAP;
- separator = ':';
- break;
- }
- else if (ch == ',')
- {
- _nc_syntax = SYN_TERMINFO;
- separator = ',';
- /*
- * Fall-through here is not an accident.
- * The idea is that if we see a comma, we
- * figure this is terminfo unless we
- * subsequently run into a colon -- but
- * we don't stop looking for that colon until
- * hitting a newline. This allows commas to
- * be embedded in description fields of
- * either syntax.
- */
- /* FALLTHRU */
- }
- else
- ch = eat_escaped_newline(ch);
+ if (ch == EOF) {
+ type = EOF;
+ goto end_of_token;
+ }
- *ptr++ = ch;
- }
- ptr[0] = '\0';
- if (_nc_syntax == ERR)
- {
- /*
- * Grrr...what we ought to do here is barf,
- * complaining that the entry is malformed.
- * But because a couple of name fields in the
- * 8.2 termcap file end with |\, we just have
- * to assume it's termcap syntax.
- */
- _nc_syntax = SYN_TERMCAP;
- separator = ':';
- }
- else if (_nc_syntax == SYN_TERMINFO)
- {
- /* throw away trailing /, *$/ */
- for (--ptr; iswhite(*ptr) || *ptr == ','; ptr--)
- continue;
- ptr[1] = '\0';
- }
+ /* have to make some punctuation chars legal for terminfo */
+ if (!isalnum(UChar(ch))
+#if NCURSES_EXT_FUNCS
+ && !(ch == '.' && _nc_disable_period)
+#endif
+ && !strchr(terminfo_punct, (char) ch)) {
+ if (!silent)
+ _nc_warning("Illegal character (expected alphanumeric or %s) - '%s'",
+ terminfo_punct, unctrl(UChar(ch)));
+ _nc_panic_mode(separator);
+ goto start_token;
+ }
- /*
- * This is the soonest we have the terminal name
- * fetched. Set up for following warning messages.
- */
- ptr = strchr(buffer, '|');
- if (ptr == (char *)NULL)
- ptr = buffer + strlen(buffer);
- ch = *ptr;
- *ptr = '\0';
- _nc_set_type(buffer);
- *ptr = ch;
+ if (tok_buf == 0)
+ tok_buf = typeMalloc(char, TOK_BUF_SIZE);
- /*
- * Compute the boundary between the aliases and the
- * description field for syntax-checking purposes.
- */
- desc = strrchr(buffer, '|');
- if (desc) {
- if (*desc == '\0')
- _nc_warning("empty longname field");
- else if (strchr(desc, ' ') == (char *)NULL)
- _nc_warning("older tic versions may treat the description field as an alias");
- }
- if (!desc)
- desc = buffer + strlen(buffer);
+#ifdef TRACE
+ old_line = _nc_curr_line;
+ old_col = _nc_curr_col;
+#endif
+ tok_ptr = tok_buf;
+ AddCh(ch);
+
+ if (first_column) {
+ _nc_comment_start = token_start;
+ _nc_comment_end = _nc_curr_file_pos;
+ _nc_start_line = _nc_curr_line;
+
+ _nc_syntax = ERR;
+ after_name = 0;
+ after_list = 0;
+ while ((ch = next_char()) != '\n') {
+ if (ch == EOF) {
+ _nc_err_abort(MSG_NO_INPUTS);
+ } else if (ch == '|') {
+ after_list = tok_ptr;
+ if (after_name == 0)
+ after_name = tok_ptr;
+ } else if (ch == ':' && last_char(0) != ',') {
+ _nc_syntax = SYN_TERMCAP;
+ separator = ':';
+ break;
+ } else if (ch == ',') {
+ _nc_syntax = SYN_TERMINFO;
+ separator = ',';
+ /*
+ * If we did not see a '|', then we found a name with no
+ * aliases or description.
+ */
+ if (after_name == 0)
+ break;
+ /*
+ * We saw a comma, but are not entirely sure this is
+ * terminfo format, since we can still be parsing the
+ * description field (for either syntax).
+ *
+ * A properly formatted termcap line ends with either a
+ * colon, or a backslash after a colon. It is possible
+ * to have a backslash in the middle of a capability, but
+ * then there would be no leading whitespace on the next
+ * line - something we want to discourage.
+ */
+ c0 = last_char(0);
+ c1 = last_char(1);
+ if (c1 != ':' && c0 != '\\' && c0 != ':') {
+ bool capability = FALSE;
/*
- * Whitespace in a name field other than the long name
- * can confuse rdist and some termcap tools. Slashes
- * are a no-no. Other special characters can be
- * dangerous due to shell expansion.
+ * Since it is not termcap, assume the line is terminfo
+ * format. However, the comma can be embedded in a
+ * description field. It also can be a separator
+ * between a description field and a capability.
+ *
+ * Improve the guess by checking if the next word after
+ * the comma does not look like a capability. In that
+ * case, extend the description past the comma.
*/
- for (ptr = buffer; ptr < desc; ptr++)
- {
- if (isspace(*ptr))
- {
- _nc_warning("whitespace in name or alias field");
- break;
- }
- else if (*ptr == '/')
- {
- _nc_warning("slashes aren't allowed in names or aliases");
- break;
+ for (s = bufptr; isspace(UChar(*s)); ++s) {
+ ;
+ }
+ if (islower(UChar(*s))) {
+ char *name = s;
+ while (isalnum(UChar(*s))) {
+ ++s;
}
- else if (strchr("$[]!*?", *ptr))
- {
- _nc_warning("dubious character `%c' in name or alias field", *ptr);
- break;
+ if (*s == '#' || *s == '=' || *s == '@') {
+ /*
+ * Checking solely with syntax allows us to
+ * support extended capabilities with string
+ * values.
+ */
+ capability = TRUE;
+ } else if (*s == ',') {
+ c0 = *s;
+ *s = '\0';
+ /*
+ * Otherwise, we can handle predefined boolean
+ * capabilities, still aided by syntax.
+ */
+ if (_nc_find_entry(name,
+ _nc_get_hash_table(FALSE))) {
+ capability = TRUE;
+ }
+ *s = (char) c0;
}
}
-
- ptr = buffer;
-
- _nc_curr_token.tk_name = buffer;
- type = NAMES;
- } else {
- while ((ch = next_char()) != EOF) {
- if (!isalnum(ch)) {
- if (_nc_syntax == SYN_TERMINFO) {
- if (ch != '_')
- break;
- } else { /* allow ';' for "k;" */
- if (ch != ';')
- break;
- }
- }
- *(ptr++) = ch;
+ if (capability) {
+ break;
}
+ }
+ } else
+ ch = eat_escaped_newline(ch);
- *ptr++ = '\0';
- switch (ch) {
- case ',':
- case ':':
- if (ch != separator)
- _nc_err_abort("Separator inconsistent with syntax");
- _nc_curr_token.tk_name = buffer;
- type = BOOLEAN;
- break;
- case '@':
- if ((ch = next_char()) != separator)
- _nc_warning("Missing separator after `%s', have %s",
- buffer, _tracechar((chtype)ch));
- _nc_curr_token.tk_name = buffer;
- type = CANCEL;
- break;
-
- case '#':
- found = 0;
- while (isalnum(ch = next_char())) {
- numbuf[found++] = ch;
- if (found >= sizeof(numbuf)-1)
- break;
- }
- numbuf[found] = '\0';
- number = strtol(numbuf, &numchk, 0);
- if (numchk == numbuf)
- _nc_warning("no value given for `%s'", buffer);
- if ((*numchk != '\0') || (ch != separator))
- _nc_warning("Missing separator");
- _nc_curr_token.tk_name = buffer;
- _nc_curr_token.tk_valnumber = number;
- type = NUMBER;
- break;
-
- case '=':
- ch = _nc_trans_string(ptr);
- if (ch != separator)
- _nc_warning("Missing separator");
- _nc_curr_token.tk_name = buffer;
- _nc_curr_token.tk_valstring = ptr;
- type = STRING;
- break;
-
- case EOF:
- type = EOF;
- break;
- default:
- /* just to get rid of the compiler warning */
- type = UNDEF;
- _nc_warning("Illegal character - %s",
- _tracechar((chtype)ch));
- }
- } /* end else (first_column == FALSE) */
- } /* end else (ch != EOF) */
+ if (OkToAdd()) {
+ AddCh(ch);
+ } else {
+ break;
+ }
+ }
+ *tok_ptr = '\0';
+ if (_nc_syntax == ERR) {
+ /*
+ * Grrr...what we ought to do here is barf, complaining that
+ * the entry is malformed. But because a couple of name fields
+ * in the 8.2 termcap file end with |\, we just have to assume
+ * it's termcap syntax.
+ */
+ _nc_syntax = SYN_TERMCAP;
+ separator = ':';
+ } else if (_nc_syntax == SYN_TERMINFO) {
+ /* throw away trailing /, *$/ */
+ for (--tok_ptr;
+ iswhite(*tok_ptr) || *tok_ptr == ',';
+ tok_ptr--)
+ continue;
+ tok_ptr[1] = '\0';
+ }
-end_of_token:
+ /*
+ * This is the soonest we have the terminal name fetched. Set up
+ * for following warning messages. If there's no '|', then there
+ * is no description.
+ */
+ if (after_name != 0) {
+ ch = *after_name;
+ *after_name = '\0';
+ _nc_set_type(tok_buf);
+ *after_name = (char) ch;
+ }
-#ifdef TRACE
- if (dot_flag == TRUE)
- DEBUG(8, ("Commented out "));
-
- if (_nc_tracing & TRACE_IEVENT)
- {
- fprintf(stderr, "Token: ");
- switch (type)
- {
- case BOOLEAN:
- fprintf(stderr, "Boolean; name='%s'\n",
- _nc_curr_token.tk_name);
- break;
+ /*
+ * Compute the boundary between the aliases and the description
+ * field for syntax-checking purposes.
+ */
+ if (after_list != 0) {
+ if (!silent) {
+ if (*after_list == '\0')
+ _nc_warning("empty longname field");
+ else if (strchr(after_list, ' ') == 0)
+ _nc_warning("older tic versions may treat the description field as an alias");
+ }
+ } else {
+ after_list = tok_buf + strlen(tok_buf);
+ DEBUG(1, ("missing description"));
+ }
- case NUMBER:
- fprintf(stderr, "Number; name='%s', value=%d\n",
- _nc_curr_token.tk_name,
- _nc_curr_token.tk_valnumber);
+ /*
+ * Whitespace in a name field other than the long name can confuse
+ * rdist and some termcap tools. Slashes are a no-no. Other
+ * special characters can be dangerous due to shell expansion.
+ */
+ for (s = tok_buf; s < after_list; ++s) {
+ if (isspace(UChar(*s))) {
+ if (!silent)
+ _nc_warning("whitespace in name or alias field");
break;
-
- case STRING:
- fprintf(stderr, "String; name='%s', value=%s\n",
- _nc_curr_token.tk_name,
- _nc_visbuf(_nc_curr_token.tk_valstring));
+ } else if (*s == '/') {
+ if (!silent)
+ _nc_warning("slashes aren't allowed in names or aliases");
+ break;
+ } else if (strchr("$[]!*?", *s)) {
+ if (!silent)
+ _nc_warning("dubious character `%c' in name or alias field", *s);
break;
+ }
+ }
- case CANCEL:
- fprintf(stderr, "Cancel; name='%s'\n",
- _nc_curr_token.tk_name);
+ _nc_curr_token.tk_name = tok_buf;
+ type = NAMES;
+ } else {
+ if (had_newline && _nc_syntax == SYN_TERMCAP) {
+ _nc_warning("Missing backslash before newline");
+ had_newline = FALSE;
+ }
+ while ((ch = next_char()) != EOF) {
+ if (!isalnum(UChar(ch))) {
+ if (_nc_syntax == SYN_TERMINFO) {
+ if (ch != '_')
+ break;
+ } else { /* allow ';' for "k;" */
+ if (ch != ';')
+ break;
+ }
+ }
+ if (OkToAdd()) {
+ AddCh(ch);
+ } else {
+ ch = EOF;
break;
+ }
+ }
- case NAMES:
+ *tok_ptr++ = '\0'; /* separate name/value in buffer */
+ switch (ch) {
+ case ',':
+ case ':':
+ if (ch != separator)
+ _nc_err_abort("Separator inconsistent with syntax");
+ _nc_curr_token.tk_name = tok_buf;
+ type = BOOLEAN;
+ break;
+ case '@':
+ if ((ch = next_char()) != separator && !silent)
+ _nc_warning("Missing separator after `%s', have %s",
+ tok_buf, unctrl(UChar(ch)));
+ _nc_curr_token.tk_name = tok_buf;
+ type = CANCEL;
+ break;
- fprintf(stderr, "Names; value='%s'\n",
- _nc_curr_token.tk_name);
- break;
+ case '#':
+ found = 0;
+ while (isalnum(ch = next_char())) {
+ numbuf[found++] = (char) ch;
+ if (found >= sizeof(numbuf) - 1)
+ break;
+ }
+ numbuf[found] = '\0';
+ number = strtol(numbuf, &numchk, 0);
+ if (!silent) {
+ if (numchk == numbuf)
+ _nc_warning("no value given for `%s'", tok_buf);
+ if ((*numchk != '\0') || (ch != separator))
+ _nc_warning("Missing separator");
+ }
+ _nc_curr_token.tk_name = tok_buf;
+ _nc_curr_token.tk_valnumber = (int) number;
+ type = NUMBER;
+ break;
- case EOF:
- fprintf(stderr, "End of file\n");
- break;
+ case '=':
+ ch = _nc_trans_string(tok_ptr, tok_buf + TOK_BUF_SIZE);
+ if (!silent && ch != separator)
+ _nc_warning("Missing separator");
+ _nc_curr_token.tk_name = tok_buf;
+ _nc_curr_token.tk_valstring = tok_ptr;
+ type = STRING;
+ break;
- default:
- _nc_warning("Bad token type");
+ case EOF:
+ type = EOF;
+ break;
+ default:
+ /* just to get rid of the compiler warning */
+ type = UNDEF;
+ if (!silent)
+ _nc_warning("Illegal character - '%s'", unctrl(UChar(ch)));
}
+ } /* end else (first_column == FALSE) */
+ } /* end else (ch != EOF) */
+
+ end_of_token:
+
+#ifdef TRACE
+ if (dot_flag == TRUE)
+ DEBUG(8, ("Commented out "));
+
+ if (_nc_tracing >= DEBUG_LEVEL(8)) {
+ _tracef("parsed %d.%d to %d.%d",
+ old_line, old_col,
+ _nc_curr_line, _nc_curr_col);
+ }
+ if (_nc_tracing >= DEBUG_LEVEL(7)) {
+ switch (type) {
+ case BOOLEAN:
+ _tracef("Token: Boolean; name='%s'",
+ _nc_curr_token.tk_name);
+ break;
+
+ case NUMBER:
+ _tracef("Token: Number; name='%s', value=%d",
+ _nc_curr_token.tk_name,
+ _nc_curr_token.tk_valnumber);
+ break;
+
+ case STRING:
+ _tracef("Token: String; name='%s', value=%s",
+ _nc_curr_token.tk_name,
+ _nc_visbuf(_nc_curr_token.tk_valstring));
+ break;
+
+ case CANCEL:
+ _tracef("Token: Cancel; name='%s'",
+ _nc_curr_token.tk_name);
+ break;
+
+ case NAMES:
+
+ _tracef("Token: Names; value='%s'",
+ _nc_curr_token.tk_name);
+ break;
+
+ case EOF:
+ _tracef("Token: End of file");
+ break;
+
+ default:
+ _nc_warning("Bad token type");
}
+ }
#endif
- if (dot_flag == TRUE) /* if commented out, use the next one */
- type = _nc_get_token();
+ if (dot_flag == TRUE) /* if commented out, use the next one */
+ type = _nc_get_token(silent);
- DEBUG(3, ("token: `%s', class %d", _nc_curr_token.tk_name, type));
+ DEBUG(3, ("token: `%s', class %d",
+ ((_nc_curr_token.tk_name != 0)
+ ? _nc_curr_token.tk_name
+ : "<null>"),
+ type));
- return(type);
+ return (type);
}
/*
*
*/
-char
-_nc_trans_string(char *ptr)
+NCURSES_EXPORT(int)
+_nc_trans_string(char *ptr, char *last)
{
-int count = 0;
-int number;
-int i, c;
-chtype ch, last_ch = '\0';
-bool ignored = FALSE;
-
- while ((ch = c = next_char()) != (chtype)separator && c != EOF) {
- if ((_nc_syntax == SYN_TERMCAP) && c == '\n')
- break;
- if (ch == '^' && last_ch != '%') {
- ch = c = next_char();
- if (c == EOF)
- _nc_err_abort("Premature EOF");
-
- if (! (is7bits(ch) && isprint(ch))) {
- _nc_warning("Illegal ^ character - %s",
- _tracechar((unsigned char)ch));
- }
- if (ch == '?') {
- *(ptr++) = '\177';
- } else {
- if ((ch &= 037) == 0)
- ch = 128;
- *(ptr++) = (char)(ch);
+ int count = 0;
+ int number = 0;
+ int i, c;
+ int last_ch = '\0';
+ bool ignored = FALSE;
+ bool long_warning = FALSE;
+
+ while ((c = next_char()) != separator && c != EOF) {
+ if (ptr >= (last - 1)) {
+ if (c != EOF) {
+ while ((c = next_char()) != separator && c != EOF) {
+ ;
}
}
- else if (ch == '\\') {
- ch = c = next_char();
- if (c == EOF)
- _nc_err_abort("Premature EOF");
-
- if (ch >= '0' && ch <= '7') {
- number = ch - '0';
- for (i=0; i < 2; i++) {
- ch = c = next_char();
- if (c == EOF)
- _nc_err_abort("Premature EOF");
-
- if (c < '0' || c > '7') {
- if (isdigit(c)) {
+ break;
+ }
+ if ((_nc_syntax == SYN_TERMCAP) && c == '\n')
+ break;
+ if (c == '^' && last_ch != '%') {
+ c = next_char();
+ if (c == EOF)
+ _nc_err_abort(MSG_NO_INPUTS);
+
+ if (!(is7bits(c) && isprint(c))) {
+ _nc_warning("Illegal ^ character - '%s'", unctrl(UChar(c)));
+ }
+ if (c == '?' && (_nc_syntax != SYN_TERMCAP)) {
+ *(ptr++) = '\177';
+ if (_nc_tracing)
+ _nc_warning("Allow ^? as synonym for \\177");
+ } else {
+ if ((c &= 037) == 0)
+ c = 128;
+ *(ptr++) = (char) (c);
+ }
+ } else if (c == '\\') {
+ bool strict_bsd = ((_nc_syntax == SYN_TERMCAP) && _nc_strict_bsd);
+
+ c = next_char();
+ if (c == EOF)
+ _nc_err_abort(MSG_NO_INPUTS);
+
+#define isoctal(c) ((c) >= '0' && (c) <= '7')
+
+ if (isoctal(c) || (strict_bsd && isdigit(c))) {
+ number = c - '0';
+ for (i = 0; i < 2; i++) {
+ c = next_char();
+ if (c == EOF)
+ _nc_err_abort(MSG_NO_INPUTS);
+
+ if (!isoctal(c)) {
+ if (isdigit(c)) {
+ if (!strict_bsd) {
_nc_warning("Non-octal digit `%c' in \\ sequence", c);
/* allow the digit; it'll do less harm */
- } else {
- push_back((char)c);
- break;
}
+ } else {
+ push_back(c);
+ break;
}
-
- number = number * 8 + c - '0';
}
- if (number == 0)
- number = 0200;
- *(ptr++) = (char) number;
- } else {
- switch (c) {
- case 'E':
- case 'e': *(ptr++) = '\033'; break;
-
- case 'a': *(ptr++) = '\007'; break;
-
- case 'l':
- case 'n': *(ptr++) = '\n'; break;
+ number = number * 8 + c - '0';
+ }
- case 'r': *(ptr++) = '\r'; break;
+ number = UChar(number);
+ if (number == 0 && !strict_bsd)
+ number = 0200;
+ *(ptr++) = (char) number;
+ } else {
+ switch (c) {
+ case 'E':
+ *(ptr++) = '\033';
+ break;
- case 'b': *(ptr++) = '\010'; break;
+ case 'n':
+ *(ptr++) = '\n';
+ break;
- case 's': *(ptr++) = ' '; break;
+ case 'r':
+ *(ptr++) = '\r';
+ break;
- case 'f': *(ptr++) = '\014'; break;
+ case 'b':
+ *(ptr++) = '\010';
+ break;
- case 't': *(ptr++) = '\t'; break;
+ case 'f':
+ *(ptr++) = '\014';
+ break;
- case '\\': *(ptr++) = '\\'; break;
+ case 't':
+ *(ptr++) = '\t';
+ break;
- case '^': *(ptr++) = '^'; break;
+ case '\\':
+ *(ptr++) = '\\';
+ break;
- case ',': *(ptr++) = ','; break;
+ case '^':
+ *(ptr++) = '^';
+ break;
- case ':': *(ptr++) = ':'; break;
+ case ',':
+ *(ptr++) = ',';
+ break;
- case '\n':
- continue;
+ case '\n':
+ continue;
+ default:
+ if ((_nc_syntax == SYN_TERMINFO) || !_nc_strict_bsd) {
+ switch (c) {
+ case 'a':
+ c = '\007';
+ break;
+ case 'e':
+ c = '\033';
+ break;
+ case 'l':
+ c = '\n';
+ break;
+ case 's':
+ c = ' ';
+ break;
+ case ':':
+ c = ':';
+ break;
default:
- _nc_warning("Illegal character %s in \\ sequence",
- _tracechar((unsigned char)ch));
- *(ptr++) = (char)ch;
- } /* endswitch (ch) */
- } /* endelse (ch < '0' || ch > '7') */
- } /* end else if (ch == '\\') */
- else if (ch == '\n' && (_nc_syntax == SYN_TERMINFO)) {
- /* newlines embedded in a terminfo string are ignored */
- ignored = TRUE;
- } else {
- *(ptr++) = (char)ch;
- }
+ _nc_warning("Illegal character '%s' in \\ sequence",
+ unctrl(UChar(c)));
+ break;
+ }
+ }
+ /* FALLTHRU */
+ case '|':
+ *(ptr++) = (char) c;
+ } /* endswitch (c) */
+ } /* endelse (c < '0' || c > '7') */
+ }
+ /* end else if (c == '\\') */
+ else if (c == '\n' && (_nc_syntax == SYN_TERMINFO)) {
+ /*
+ * Newlines embedded in a terminfo string are ignored, provided
+ * that the next line begins with whitespace.
+ */
+ ignored = TRUE;
+ } else {
+ *(ptr++) = (char) c;
+ }
- if (!ignored) {
- last_ch = ch;
- count ++;
+ if (!ignored) {
+ if (_nc_curr_col <= 1) {
+ push_back(c);
+ c = '\n';
+ break;
}
- ignored = FALSE;
+ last_ch = c;
+ count++;
+ }
+ ignored = FALSE;
- if (count > MAXCAPLEN)
- _nc_warning("Very long string found. Missing separator?");
- } /* end while */
+ if (count > MAXCAPLEN && !long_warning) {
+ _nc_warning("Very long string found. Missing separator?");
+ long_warning = TRUE;
+ }
+ } /* end while */
- *ptr = '\0';
+ *ptr = '\0';
- return(ch);
+ return (c);
}
/*
* get_token() call.
*/
-void _nc_push_token(int tokclass)
+NCURSES_EXPORT(void)
+_nc_push_token(int tokclass)
{
/*
- * This implementation is kind of bogus, it will fail if we ever do
- * more than one pushback at a time between get_token() calls. It
- * relies on the fact that curr_tok is static storage that nothing
- * but get_token() touches.
+ * This implementation is kind of bogus, it will fail if we ever do more
+ * than one pushback at a time between get_token() calls. It relies on the
+ * fact that _nc_curr_token is static storage that nothing but
+ * _nc_get_token() touches.
*/
pushtype = tokclass;
+ if (pushname == 0)
+ pushname = typeMalloc(char, MAX_NAME_SIZE + 1);
_nc_get_type(pushname);
DEBUG(3, ("pushing token: `%s', class %d",
- _nc_curr_token.tk_name, pushtype));
+ ((_nc_curr_token.tk_name != 0)
+ ? _nc_curr_token.tk_name
+ : "<null>"),
+ pushtype));
}
/*
* Panic mode error recovery - skip everything until a "ch" is found.
*/
-void _nc_panic_mode(char ch)
-{
- int c;
-
- for (;;) {
- c = next_char();
- if (c == ch)
- return;
- if (c == EOF)
- return;
- }
-}
-
-/*****************************************************************************
- *
- * Character-stream handling
- *
- *****************************************************************************/
-
-#define LEXBUFSIZ 1024
-
-static char *bufptr; /* otherwise, the input buffer pointer */
-static char *bufstart; /* start of buffer so we can compute offsets */
-static FILE *yyin; /* scanner's input file descriptor */
-
-/*
- * _nc_reset_input()
- *
- * Resets the input-reading routines. Used on initialization,
- * or after a seek has been done. Exactly one argument must be
- * non-null.
- */
-
-void _nc_reset_input(FILE *fp, char *buf)
+NCURSES_EXPORT(void)
+_nc_panic_mode(char ch)
{
- pushtype = NO_PUSHBACK;
- pushname[0] = '\0';
- yyin = fp;
- bufstart = bufptr = buf;
- _nc_curr_file_pos = 0L;
- if (fp != 0)
- _nc_curr_line = 0;
- _nc_curr_col = 0;
+ int c;
+
+ for (;;) {
+ c = next_char();
+ if (c == ch)
+ return;
+ if (c == EOF)
+ return;
+ }
}
-/*
- * int last_char()
- *
- * Returns the final nonblank character on the current input buffer
- */
-static int
-last_char(void)
+#if NO_LEAKS
+NCURSES_EXPORT(void)
+_nc_comp_scan_leaks(void)
{
- size_t len = strlen(bufptr);
- while (len--) {
- if (!isspace(bufptr[len]))
- return bufptr[len];
- }
- return 0;
-}
-
-/*
- * int next_char()
- *
- * Returns the next character in the input stream. Comments and leading
- * white space are stripped.
- *
- * The global state variable 'firstcolumn' is set TRUE if the character
- * returned is from the first column of the input line.
- *
- * The global variable _nc_curr_line is incremented for each new line.
- * The global variable _nc_curr_file_pos is set to the file offset of the
- * beginning of each line.
- */
-
-static int
-next_char(void)
-{
- if (!yyin)
- {
- if (*bufptr == '\0')
- return(EOF);
- if (*bufptr == '\n') {
- _nc_curr_line++;
- _nc_curr_col = 0;
- }
+ if (pushname != 0) {
+ FreeAndNull(pushname);
}
- else if (!bufptr || !*bufptr)
- {
- /*
- * In theory this could be recoded to do its I/O one
- * character at a time, saving the buffer space. In
- * practice, this turns out to be quite hard to get
- * completely right. Try it and see. If you succeed,
- * don't forget to hack push_back() correspondingly.
- */
- static char line[LEXBUFSIZ];
- size_t len;
-
- do {
- _nc_curr_file_pos = ftell(yyin);
-
- if ((bufstart = fgets(line, LEXBUFSIZ, yyin)) != NULL) {
- _nc_curr_line++;
- _nc_curr_col = 0;
- }
- bufptr = bufstart;
- } while
- (bufstart != NULL && line[0] == '#');
-
- if (bufstart == NULL)
- return (EOF);
-
- while (iswhite(*bufptr))
- bufptr++;
-
- /*
- * Treat a trailing <cr><lf> the same as a <newline> so we can read
- * files on OS/2, etc.
- */
- if ((len = strlen(bufptr)) > 1) {
- if (bufptr[len-1] == '\n'
- && bufptr[len-2] == '\r') {
- bufptr[len-2] = '\n';
- bufptr[len-1] = '\0';
- }
- }
+ if (tok_buf != 0) {
+ FreeAndNull(tok_buf);
}
-
- first_column = (bufptr == bufstart);
-
- _nc_curr_col++;
- return(*bufptr++);
-}
-
-static void push_back(char c)
-/* push a character back onto the input stream */
-{
- if (bufptr == bufstart)
- _nc_syserr_abort("Can't backspace off beginning of line");
- *--bufptr = c;
-}
-
-static long stream_pos(void)
-/* return our current character position in the input stream */
-{
- return (yyin ? ftell(yyin) : (bufptr ? bufptr - bufstart : 0));
-}
-
-static bool end_of_stream(void)
-/* are we at end of input? */
-{
- return ((yyin ? feof(yyin) : (bufptr && *bufptr == '\0'))
- ? TRUE : FALSE);
}
-
-/* comp_scan.c ends here */
+#endif
projects / ncurses.git / blobdiff